Respuesta :
n= 0.4
because you will have to subtract 9 from both sides
then divide 3.5 by the number you get from 10.4-9
and then your answer will be 0.4
because you will have to subtract 9 from both sides
then divide 3.5 by the number you get from 10.4-9
and then your answer will be 0.4